Week 6 Video 4 Visualization State Space Networks State Space - - PowerPoint PPT Presentation

Visualization State Space Networks

Week 6 Video 4

State Space Diagrams

¨ Visualizations of all the states that the learning

system can have during a problem

¤ State = complete characterization of the situation

¨ Also referred to as student learning pathways or

interaction networks

State Space Diagrams in Refraction

¨ http://play.centerforgamescience.org/refraction/site/ ¨ Martin, T., Aghababyahm A., Pfaffman, J., Olsen, J., Baker, S.,

Janisiewicz, P., Phillips, R., Smith, C.P. (2012) Nanogenetic Learning Analytics: Illuminating Student Learning Pathways in an Online Fraction Game. Proceedings of the 3rd International Conference on Learning Analytics and Knowledge, 165-169.

State 1 (Refraction)

State 2 (Refraction)

State 3 (Refraction)

Transitions between states

Can show single student trajectories

Successful student (Martin et al., 2012)

Success state

Unsuccessful student (Martin et al., 2012)

¨ Student goes back and forth endlessly between a

small number of states…

Can be used to show all paths, and for more complex systems…

Johnson, M., Eagle, M., Stamper, J., Barnes, T. (2013) An Algorithm for Reducing the Complexity of Interaction Networks. Proceedings of the 6th International Conference on Educational Data Mining, 248-251.

Start state Success states Thicker lines = more students

Uses

¨ Study specific student trajectories ¨ See which paths end up being productive ¨ See which paths are rare (despite being productive) ¨ Make recommendations (hints) to students based on

their path (Barnes, Stamper, & Lehmann, 2008)

Next lecture

¨ Other visualizations of educational data